98 WONT START

1998 Dodge Durango • V8 4WD Automatic • 142 miles

98 dodge durango. It was running fine and I went into a store and when I came out it wouldnt start. It has fuel and it would turn over but the idle was too low to keep the engine running and pressing the gas pedal did nothing. I check the fuel cable, fuel pressure, and removed the o2 sensor above the catalytic converter and still nothing. Any ideas what it might be?